Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Knowledge Ecology and Environment Environmental pollution

खालीलपैकी कोणता हरितगृह वायू नाही?

1
कार्बन डायऑक्साइड
2
मिथेन
3
हायड्रोक्लोरोफ्लोरोकार्बन्स
4
ऑक्सिजन
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